Using The Telephony Channels - Polycom SoundStructure C16 Design Manual

● The background color indicates which version of the input processing is selected - blue indicates the
conferencing path (or noise canceled path on the SR-series), light blue indicates the sound
reinforcement path, and white indicates the ungated/recording path.
Matrix Crosspoint Visual Controls
Ungated/Recording
Conferencing
Sound Reinforcement
Ungated/Recording
Conferencing
Sound Reinforcement
Inputs
Ungated/Recording
Conferencing
Sound Reinforcement
Ungated/Recording
Conferencing
Sound Reinforcement

Using the Telephony Channels

To use a telephone interface, either the SoundStructure TEL1 or TEL2 must be included in the design and
installed in the SoundStructure device.
Each telephone interface that is used in the design is represented by two virtual channels: one for the input
telephone signal and one for the output telephony signal. An example of these two virtual channels is shown
in the following figure.
The signal processing paths for both the input and output channels include equalization, dynamics
processing, and audio delay. In addition, the telephone input channel has noise cancellation and automatic
gain control that can be applied to the signal received from the telephone line.
Polycom, Inc.
Outputs
Arc indicates L/R balance or pan
No arc indicates centered balance/pan
Value of crosspoint is the gain in dB
Bold text Indicates signal is unmuted
Crosspoint background indicates
version of input processing
White - Ungated/Recording
Blue - Conferencing (C-series),
Noise cancelled (SR-series)
Light Blue - Sound Reinforcement
Underscore indicates Inverted polarity
142